baber/WOPTO huggingface dataset:
Patent GB-254879-A (GB)
Title: Electric ovens and heating appliances therefor
IPC: H05B3/64
Filed: 1925-07-10
Abstract: 254,879. White, S. D., and Settle, T. July 10, 1925. Resistance ovens.-A heating device for an oven or water tank comprises a protecting tube 1 fitted with a removable heating element consisting of a bar 12 carrying insulating blocks 15, and spaced insulating bridgepieces 14 co-operating with the blocks to hold the resistance member 19 in position. The resistance member is a coiled wire situated in grooves in the blocks 15 and bridgepieces 14. A plate fitted to the end of the bar closes the tube and carries the heater terminals. The tube may be oval, Fig 2, or rings 13 may be fitted to the bar in the case of a circular tube, Fig. 4. Rows of the devices may be removably supported by rings 31 and cradles 32 in the top and bottom of an oven. The bus-bars are arranged in recesses 27 having doors 28. A ventilator 26 is arranged at the back of the oven.
Patent GB-1347648-A (GB)
Title: Cooling tower with fan/drive motor assembly
IPC: F28F25/00
Filed: 1972-04-17
Abstract: 1347648 Axial-flow fans ECODYNE COOLING PRODUCTS CO 17 April 1972 [10 May 1971] 17711/72 Heading F1C A cooling tower comprises a fan having substantially horizontal blades driven by a motor located below the fan through a single-reduction vertical-shaft helical gearing mounted immediately below the fan. The fan, which is located in the air outlet of a crossflow cooling tower, comprises blades (not shown) carried by a shaft 45 and driven by an electric motor 30 via a flexible coupling 72 and preferably double helical or herringbone gearing 65, 60. A pump 76 circulates oil from. a sump 51 to lubricate the gears 65, 50 and the shaft bearings. The fan can be converted to twospeed operation by providing a second, lowerspeed electric motor driving the gear 50 through a further flexible coupling and pinion gear, openings 90, 91 being bored out to accommodate the pinion shaft bearings.
Patent GB-1170184-A (GB)
Title: Pulse Width Control for Adjustable Speed Drive System.
IPC: H02P23/00
Filed: 1968-04-16
Abstract: 1,170,184. Automatic speed control. GENERAL ELECTRIC CO. April 16, 1968 [May 19, 1967], No. 17800/68. Heading G3R. In a speed regulation system for an electric motor 10, a reference source 16 supplies a direct voltage signal to a summing junction 30 for comparison with the average voltage level of feedback signals from circuit 32 which comprises an A.C. tachometer generator 36. The latter is combined with a stable frequency source 38 and a triggercontrolled counter circuit 40 to produce a precision pulse having a width equal to the duration of a predetermined number of cycles of the signal from the source 38. The precision pulse is applied to a unit 42 for providing successive pulses with a constant voltage level, the average value of the voltage produced by these pulses over the length of any cycle of the voltage from the generator 36 being proportional to the speed of the motor. The error signal derived from the junction 30 is integrated by the remaining portion of the system which comprises amplifier 59 having stabilizing networks 60, 62. The amplified error signal causes a power supply 64 (such as a D.C. generator or thyristor network) to vary the energization of motor 10. During a positive half-cycle of the tachometer signal, a transistor 44 is turned on so that diode 52 is blocked and no trigger signal is generated at this time. During a negative half-cycle, the transistor 44 is turned off whereby diode 52 is forward biased by the voltage developed across a breakdown device 45 and thus couples a trigger signal to a counter circuit 40. A controlled rectifier 54 is also forward biased during this period. When triggered, the counter circuit maintains an output signal for a duration equal to a predetermined number of cycles from the source 38, the trigger pulse being terminated by the rectifier 54 when the first portion of the precision pulse is present at the junction 58.
Patent GB-256759-A (GB)
Title: Improvements in or relating to advertising devices
IPC: G09F1/06
Filed: 1925-07-11
Abstract: 256,759. British Colour Printing Co., Ltd., and Gibbons, H. G. July 11, 1925. Show cards.-A show card comprises a collapsable polygonal part 1 - - 4 having at one angle 6 a, slot through which slides a display portion B attached at 8 to the sides 3, 4. The card may rest on a horizontal surface, or be provided with a loop for hanging against a flat wall or a projecting or re-entrant angle.
Patent GB-121169-A (GB)
Title: Improvements in and relating to Feed-water Heaters and Steam Condensers.
IPC: F22D1/32
Filed: 1917-12-01
Abstract: 121,169. British Thomson - Houston Co., and Samuelson, F. Dec. 1, 1917. Feed-water, heating.-Relates to a steam power plant in which the exhaust steam or the steam from an intermediate stage of an engine or turbine is used to heat the condensate from the main condenser in a surface heater, the condensate passing through the tubes of the heater on its way to the hot-well tank. The condensed steam in the heater c is automatically maintained at a suitable level below the top of the heating- tubes, so that the upper tubes serve to condense the steam from an intermediate stage of the turbine a, and the lower tubes are submerged in the water of condensation. The condensate is withdrawn from the main condenser b by a centrifugal pump d, passes upwards through the tubes of the heater, and is discharged through the outlet pipe into the hot-well tank. The water-level in the heater is maintained by a float-valve g, which, when open, allows surplus water to drain into the condenser through a pipe m. The steam space of the heater is in communication with the condenser through the hollow valve stem k.
Patent GB-717127-A (GB)
Title: Improvements in apparatus for measuring dielectric properties of materials
Inventor: GOLDSMITH KURT
IPC: G01N27/22
Filed: 1951-07-27
Abstract: 717,127. Condensers; capacitance and moisture measurements. UNILEVER, Ltd. July 22, 1952, [July 27, 1951.] No. 17825/51. Class 37. A test capacitor for measuring dielectric properties of granular materials, plastic materials, or liquids comprises a support member of insulating. material and three or a larger odd number of coaxially displaced electrodes in the form of rings supported by coaxial with the support member. In the construction shown in Fig. the support member 1 is a hollow tube in which are embedded five electrodes 2 in the form of rings. The outside of the tube is covered by a conducting sheath 3 connected to alternate electrodes by stiff wires 4. The other electrodes are connected by a stiff wire 5 which terminates in a coaxial outlet 6. The sheath 3 is earthed and forms a screen, the outer electrodes connected to it acting as guard rings. In a modification the capacitor is in the form of a cup or beaker, the lower end being closed by an extension piece integral with the lower electrode. In another construction in the form of a dipstick a rod of insulative material has electrode rings on the outside with insulating spacer rings between them. The surfaces of the electrodes which come into contact with the material to be tested may be coated with insulating material or covered by a thin sheath of insulating material. The ring electrodes 2, Fig. 1, may alternatively be on the outside of the tube i. Fig. 5 shows a test capacitor in the form of a beaker. The support member i of insulating material is of tubular form closed at one end. Three ring electrodes 2A, 2B, 2C and two end electrodes 2<SP>1</SP> are situated on the outside of the tube. A conducting. sheath 3 is made integral with the end electrodes 2<SP>1</SP> and also covers the closed end of the tube. The sheath is connected to the centre electrode 2C by a wire 4. The spaces between the electrodes may be air-filled or filled in by an insulator 9. Separate connecting wires 10, 11 may be provided for the electrodes 2A, 2B. The support member may be of polystryene, glass, or ceramic. The electrodes may be of brass or stainless steel. The electrode rings may alternatively be formed by depositing material on the support member in the form of conductive paint such as colloidal graphite, or by metal spraying.
Patent GB-120131-A (GB)
Title: Improvements in Automobile Fenders or Mud-guards.
Inventor: BUDD EDWARD GOWEN
IPC: B62D25/18
Filed: 1917-12-03
Abstract: 120,131. Budd, E. G., and Ledwinka, J. Dec. 3, 1917. Mud-guards.-In mud-guards for automobiles, the contiguous edges of the crown 1 and skirt 2 are provided with inturned abutting flanges 6, 7 which are welded together so that the parts are firmly united by a joint having a smooth exterior, and a lamp bracket 5 is carried upon the skirt. The guard is supported by an arm comprising a channel body portion 3 with flanges 8, an angle bracket 9 and a foot 11 welded to the arm serving to fix it to the chassis side bar 4. The skirt 2 is secured to the flanges 8 and extends downwardly over the wall 10 of the bracket 9; the outer end 22 of the arm is downturned to take in over the bead 21 on the crown, and is spot welded to the side edge of the crown. The edge of the skirt is shaped around a wire filler 16 to form a bead. The lamp bracket 5 has a base 17 riveted to the skirt 2 and flanges 8, and the lamp wires may be accommodated in the channel 3 and arranged to pass into the bracket through apertures 19. The skirt and guard portion 23 are formed in one piece, an outstanding edge 24 being secured to the bar 4.
Patent GB-1100231-A (GB)
Title: Keyboards
Inventor: MONTGOMERIE GEORGE ALAN
IPC: H03M11/08
Filed: 1964-04-30
Abstract: 1,100,231. Keyboard arrangements. SERCK R. & D. Ltd. 23 April, 1965 [30 April, 1964] No. 17943/64. Heading G4H. A plurality of keyboards A, B, C, D, E, F (Fig. 2) are set simultaneously, the results of the setting being stored in electrical circuits which are read out sequentially so that the symbols represented by the keyboard setting are printed successively. In the form shown thirty five different combinations of the keys A1-A6 of keyboard A are used to represent the letters A-Z and digits 0-9, and similarly for keyboards B, C, D. The keys E1, E2 determine the position of the case and the keys F are used for punctuation etc. On releasing the keys E the operating cycle commences, a signal being sent via logic means (Fig. 7, not shown) to terminal 12 or 13 to instruct the machine to shift into the upper or lower case respectively. When the instruction has been carried out a pulse is fed from the printer 11 to a sequencer 20 which then causes gates associated with the keyset A to produce an output according to the states of electrical circuits 33-38 (Fig. 3). These signals are passed to a translator 16 to give an output on one of its terminals Ta, Tb. . . . This signal is passed to a coder 17, which may be a diode matrix or an array of NOR gates, the seven output terminals of which are connected to the printer. When the character has been printed, a pulse 15 is passed to the sequencer which sends a read-out pulse to the logic means associated with the keyboard E so that if necessary the ease is shifted. Keyboard B is then read out. This process is repeated until the keyboard F has been read when all the circuits and bi-stable devices are reset. The keyboards may be used for feeding symbols into typewriters, type setting machines, calculating machines and card and type punching machines.
Patent GB-699848-A (GB)
Title: Improvements in or relating to grinding mills of the edge runner type
IPC: B02C25/00
Filed: 1952-07-16
Abstract: 699,848. Retractive switches. LONDON BRICK CO., Ltd., and HERSEE, E. D. July 16, 1952, No. 17965/52. Class 38 (v) [Also in Group II] An electric switch for controlling the feed motor of an edge-runner mill (see Group II) comprises contacts 27 bridged by a roller 26 which is held by a spring 28 against the contacts. The roller is carried by a member 24a pivoted at 24b to a lever 24 which bears on a stop 24c under the influence of the spring. A further lever, 22, pivoted on the casing 9 of the switch and operated against the influence of a damping device such as the dash-pot 21, carries a roller which can engage prongs 23 on the lever 24 to rock the latter past the dead-centre position and allow the spring 28 to withdraw the roller 26 by snap-action. The lever 22 is rocked to withdraw the roller 26 by a weight 16 carried by a lever 14 connected by a link 17 to the lever 22, a plunger 10 supporting a weight 13 having been raised automatically by the mill to allow rocking of the lever 14 about its pivot 15. The effect of the weight 13 on the plunger 10 overcomes that of the weight 16 to return the roller 26 to the contacts 27 when the plunger is allowed to fall. A plate 20, carrying the contacts 27 and the bridge roller 26, is mounted on pins 29 on the casing 9 of the switch so that it can be moved by a lever 30 co-operating with a quadrant 31 to adjust the position of the lever 24 relatively to the lever 22, the lever 30 being mounted on a spindle 32 connected by a crank or eccentric 33 to the plate 20.
Patent GB-1079624-A (GB)
Title: Display stand
IPC: A47F5/06
Filed: 1966-04-25
Abstract: 1,079,624. Display stands. DESIGNA G.m.b.H. April 25, 1966 [April 27, 1965; Dec. 21, 1965], No. 17978/66. Heading A4B. A display stand comprises a pole 10 rotatably mounted in a bore in a pedestal 12 and a part circular resilient clip 22 which engages the pole and has means for holding a display board 20 or a tray 40. The holding means may comprise either two prongs 32 on the back of the clip 22 and adapted to form a slot for receiving the display board or a slot in the clip 22 for receiving a bracket 52 fixed to the tray 40. The pole has collars 16 between which the clips engage and an axial recess 18 for receiving the bottom of another pole.
Patent GB-1136145-A (GB)
Title: Improvements in or relating to soil cultivating implements
IPC: F16H3/02
Filed: 1966-04-25
Abstract: 1,136,145. Agricultural implements. C. VAN DER LELY N.V. 25 April, 1966 [24 May, l965], No. 18097/66. Heading A1B. A soil cultivating implement comprising digging members 31 fixed on arms 30 mounted on a shaft driven through gearing from a tractor power shaft, is provided with a roller 15 mounted between supports 17 carried by arms 18 and adjusted by a crank 26. Blades 15A are provided at one end of the roller to aid the rotation thereof. A scraper 21 for the roller is mounted between the supports 17. A hood 12 for the digging members is provided with spaced rods 14 which allow fine soil to pass through causing the larger lumps and stones to fall behind the digging members.
Patent GB-436910-A (GB)
Title: Improvements in heat insulation
IPC: F16L59/02
Filed: 1934-06-19
Abstract: 436,910. Nonconducting coverings for heat. STONE, S. C. E., and STONE, S. V., 53, Victoria Street, Westminster. June 19, 1934, No. 18111. [Class 64 (ii)] A lagging for tanks and the like consists of asbestos enclosed in a linen, canvas, paper or other fabric covering. A suitable length is provided with eyelets, studs, hooks, plates or other fasteners near the edges, and is held in position around the cistern by springs attached to the fasteners.
Patent GB-1502310-A (GB)
Title: Basic azo compounds
IPC: D06P1/42
Filed: 1975-05-01
Abstract: 1502310 Basic monoazo dyestuffs SANDOZ Ltd 1 May 1975 [4 May 1974] 18252/75 Heading C4P Novel basic monoazo dyestuffs, free from sulpho groups, contain a diazo component radical which is a quaternized and optionally further substituted radical of a thiazole, benzothiazole, 1,2,4-triazole, indazole, imidazole or pyridine or a quaternized radical of naphtho[2,1-d]thiazole, bound to the azo linkage through a carbon atom adjacent to a ring nitrogen atom, and a coupling component radical which is a phenyl radical containing an optionally substituted amino group in the para position and an optionally substituted alkyl group in each of the two positions ortho to the azo linkage and being optionally substituted elsewhere in the ring. They are prepared by quaternization of the corresponding unquaternized dyes, these in turn being prepared by conventional diazotization of suitable heterocyclic amines and coupling with suitably 3,5-disubstituted anilines. They are used to dye materials based on homo- or mixed-polymers of acrylonitrile or asymmetrical dicyanoethylene, or acid modified synthetic polyamide or polyester, or leather or paper.
Patent GB-598947-A (GB)
Title: Improvements in or relating to apparatus for mixing fluids
IPC: F02K1/38
Filed: 1943-11-05
Abstract: 598,947. Gas turbines. POWER JETS (RESEARCH & DEVELOPMENT), Ltd., and LLOYD, P. Nov. 5, 1943, No. 18434. [Class 51 (i)] [Also in Group II] In apparatus for mixing the combustion products of a gas turbine engine, downsteam of the combustion zone, with cold air, in which the fluid streams flowing in the same direction meet at the trailing or down-stream edge of a boundary wall separating the streams, the wall is adapted to divide the fluid streams so that they flow in interleaved relation immediately before leaving its trailing edge and entering a mixing chamber. As shown, the boundary wall is constituted by the inner of two concentric tubes 1, 2, its downstream end 3 being flared outwardly and deeply corrugated or fluted to provide interleaved fluid channels 4, 5. The corrugations may be angular, curved or castellated. The downstream edge of the tube 2 may have a lip or beading to set up a small degree of turbulence in the fluids beyond said edge. The change in the tube 2 from plain circular section to the re-entrant configuration is sufficiently abrupt to produce a transverse velocity component in the interleaved streams so that they will impinge upon one another at an angle. The configuration of the terminal portion 3 of the tube may be such that the crosssectional areas of the flow conduits for the respective fluids remain substantially constant throughout their lengths.
Patent GB-130338-A (GB)
Title: Improvements in or relating to Exposure Meters.
Inventor: GODEFROY MARIE LEON
IPC: G01J1/40
Filed: 1919-07-24
Abstract: 130,338. Godefroy, M. L. July 26, 1918, [Convention date]. Photometric apparatus.-In a photographic exposure meter based on the position of invisibility of a slot arranged between a viewing aperture and a screen of graduated opacity, a circular translucent screen C, Figs. 2 and 3, having sectors of increasing opacity is viewed through two slots E E<1> Fig. 4, in a disk D, the screen and disk being mounted in cylindrical carriers A, Band relatively adjustable. The cylinder A is rotated until one slot is indistinguishable whilst the other remains faintly visible. The cylinder A carries a scale I, Fig..1, and the cylinder B an index pointer J, so that by means of a table or of a curve constructed experimentally the correct exposure is obtained. The screen C is shaded by the end of the cylinder A and the cylinder B is fitted with a viewing lens F and shaded eye piece H.
Patent GB-314218-A (GB)
Title: Improvements in smoking pipes
IPC: A24F1/08
Filed: 1928-06-26
Abstract: 314,218. Mathias, J. June 26, 1928. Tobacco pipes.-In a pipe of the kind having a tubular extension 2 of the mouthpiece bore with a hole 5 formed therein behind a closed enlarged end 4, one or more ridges 6 are formed behind the hole 5 to prevent moisture from creeping down the extension 2 into the hole 5. Specifications 58/06 and 184,981 are referred to.
Patent GB-855650-A (GB)
Title: Improvements in or relating to flowmeters
Inventor: LAKE DAVID BRIAN
IPC: G01F1/66
Filed: 1958-06-10
Abstract: 855,650. Ultrasonic fluid-flow meters. NATIONAL RESEARCH DEVELOPMENT CORPORATION. June 2, 1959 [June 10, 1958], No. 18473/58. Class 40(7). An ultrasonic fluid flow meter comprises at least one pair of electro-acoustic transmitting and receiving transducers together with associated coupling blocks for transmitting ultrasonic waves by upstream and downstream paths across the pipe carrying the fluid, compressional waves being generated in the fluid by shear waves generated in the coupling blocks. In one embodiment Fig. 4 the 5 mc/s. C.W. outputs from receiving piezo-electric crystals 7,27 are heterodyned with 4À9 mc/s. oscillations, the relative phases of the 100 kc/s. outputs from mixers 31, 41 being proportional to the mean velocity v of the fluid in pipe 1. After squaring and differentiation of the 100 kc/s. oscillations they trigger bistable multivibrator 50 whose output mark/ space ratio is correspondingly proportional to v. The multivibrator output is smoothed by filter 51 to provide a D.C. signal to meter 52 calibrated in fluid velocity. In a second embodiment a pair of transducers are alternately used for simultaneous transmission and reception accomplished by a switching pulse generator, the phase difference (i.e. fluid velocity) measurement being accomplished as before, Fig. 6 (not shown). It is demonstrated that for a beam angle in the fluid of 45 degrees to the pipe axis there is partial inherent compensation for error due to ultrasonic propagation velocity change with e.g. fluid temperature. To avoid sludge-retaining cavities in the pipe wall due to transducer coupling block insertion the pipe is fitted with a plastic liner, the liner and coupling blocks having flat faces, Figs. 1 - 3 (not shown). The coupling blocks may be of tin, polystyrene, silver, or lead glass and be protected from corrosion by the fluid with a shim of stainless steel; or an anti-corrosion coating of platinum, gold or plastic material may be used. In one form the coupling block is associated with X-cut quartz crystal 5 Fig. 5 which generates a compressional wave travelling in a beam to face 19 from which shear wave beam 14 is produced and subsequently converted into a compressional wave travelling through the fluid to coupling block 6.
Patent GB-677784-A (GB)
Title: Improvements in and relating to a method for treating the surface of optical elements and to an optical element treated thereby
IPC: G02B1/12
Filed: 1949-07-13
Abstract: 677,784. Reducing surface reflection. KOCH, J. July 13, 1949 [July 20, 1948], No. 18530/49. Class 97 (i). Surface reflection of optical elements formed for example of glass or quartz is reduced by irradiating the surface with one or more beams of energetic ions of argon, krypton or xenon, of which some at least penetrate the surface of the element. The inert gas may be ionized in an electric arc-discharge, purified by a magnetic field and directed on to the surface by an electric lens system. Such action modifies the surface to reduce reflection. The invention may be applied to reduce reflection from the glass screen of a cathode-ray tube and of contact spectacle lenses.
Patent GB-680859-A (GB)
Title: Glazing bars
Inventor: HODKINSON WALTER THOMAS
IPC: E04D3/08
Filed: 1950-07-25
Abstract: 680,859. Glazing. HOPE & SONS, Ltd , H. July 16, 1951 [July 25, 19501, No. 18535/50. Class 20(iii) A glazing bar for double glazing comprises a web a, a flange b extending laterally from the web and serving both to carry the outer glass layer d and to support the bar on the roof or other framework, and an integral or separate sub-flange j for supporting the inner glass layer n at a position within the framework.